org.eclipse.tracecompass.analysis.os.linux.ui/src/org/eclipse/tracecompass/analysis/os/linux/ui/views/controlflow/ControlFlowCheckActiveProvider.java

   1 /*******************************************************************************
   2  * Copyright (c) 2015 Keba AG
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Christian Mansky - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.tracecompass.analysis.os.linux.ui.views.controlflow;
  14
  15 import org.eclipse.tracecompass.analysis.os.linux.core.kernelanalysis.Attributes;
  16 import org.eclipse.tracecompass.analysis.os.linux.core.kernelanalysis.KernelAnalysisModule;
  17 import org.eclipse.tracecompass.analysis.os.linux.core.kernelanalysis.StateValues;
  18 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem;
  19 import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException;
  20 import org.eclipse.tracecompass.statesystem.core.exceptions.StateSystemDisposedException;
  21 import org.eclipse.tracecompass.statesystem.core.interval.ITmfStateInterval;
  22 import org.eclipse.tracecompass.tmf.core.statesystem.TmfStateSystemAnalysisModule;
  23 import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimeRange;
  24 import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace;
  25 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceContext;
  26 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceManager;
  27 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.dialogs.ITimeGraphEntryActiveProvider;
  28 import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeGraphEntry;
  29
  30 /**
  31  * Provides Functionality for check Active / uncheck inactive
  32  *
  33  * @noinstantiate This class is not intended to be instantiated by clients.
  34  * @noextend This class is not intended to be subclassed by clients.
  35  * @since 1.0
  36  */
  37 public class ControlFlowCheckActiveProvider implements ITimeGraphEntryActiveProvider {
  38
  39     String fLabel;
  40     String fTooltip;
  41
  42     /**
  43      * @param label
  44      *            Button label
  45      * @param tooltip
  46      *            Button tooltip
  47      */
  48     public ControlFlowCheckActiveProvider(String label, String tooltip) {
  49         fLabel = label;
  50         fTooltip = tooltip;
  51     }
  52
  53     @Override
  54     public String getLabel() {
  55         return fLabel;
  56     }
  57
  58     @Override
  59     public String getTooltip() {
  60         return fTooltip;
  61     }
  62
  63     @Override
  64     public boolean isActive(ITimeGraphEntry element) {
  65         if (element instanceof ControlFlowEntry) {
  66             ControlFlowEntry cfe = (ControlFlowEntry) element;
  67
  68             TmfTraceManager traceManager = TmfTraceManager.getInstance();
  69             TmfTraceContext traceContext = traceManager.getCurrentTraceContext();
  70             TmfTimeRange winRange = traceContext.getWindowRange();
  71             TmfTimeRange selRange = traceContext.getSelectionRange();
  72
  73             /* Take precedence of selection over window range. */
  74             long beginTS = selRange.getStartTime().getValue();
  75             long endTS = selRange.getEndTime().getValue();
  76
  77             /* No selection, take window range */
  78             if (beginTS == endTS) {
  79                 beginTS = winRange.getStartTime().getValue();
  80                 endTS = winRange.getEndTime().getValue();
  81             }
  82
  83             ITmfTrace trace = cfe.getTrace();
  84             ITmfStateSystem ssq = TmfStateSystemAnalysisModule.getStateSystem(trace, KernelAnalysisModule.ID);
  85             if (ssq != null) {
  86                 beginTS = Math.max(beginTS, ssq.getStartTime());
  87                 endTS = Math.min(endTS, ssq.getCurrentEndTime());
  88                 if (beginTS > endTS) {
  89                     return false;
  90                 }
  91                 try {
  92                     int statusQuark = ssq.getQuarkRelative(cfe.getThreadQuark(), Attributes.STATUS);
  93
  94                     /* Get the initial state at beginTS */
  95                     ITmfStateInterval currentInterval = ssq.querySingleState(beginTS, statusQuark);
  96                     if (isIntervalInStateActive(currentInterval)) {
  97                         return true;
  98                     }
  99
 100                     /* Get the following state changes */
 101                     long ts = currentInterval.getEndTime();
 102                     while (ts != -1 && ts < endTS) {
 103                         ts++; /* To "jump over" to the next state in the history */
 104                         currentInterval = ssq.querySingleState(ts, statusQuark);
 105                         if (isIntervalInStateActive(currentInterval)) {
 106                             return true;
 107                         }
 108                         ts = currentInterval.getEndTime();
 109                     }
 110                 } catch (AttributeNotFoundException | StateSystemDisposedException e) {
 111                     /* Ignore ... */
 112                 }
 113             }
 114         }
 115
 116         return false;
 117     }
 118
 119     private static boolean isIntervalInStateActive (ITmfStateInterval ival) {
 120         int value = ival.getStateValue().unboxInt();
 121         /* An entry is only active when running */
 122         if (value == StateValues.PROCESS_STATUS_RUN_USERMODE || value == StateValues.PROCESS_STATUS_RUN_SYSCALL ||
 123                 value == StateValues.PROCESS_STATUS_INTERRUPTED) {
 124             return true;
 125         }
 126
 127         return false;
 128     }
 129
 130 }